US4324729A
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Novel acetylenic compounds useful as starting materials for preparing an alicyclic ketone
Assignee: Firmenich SA
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Filing: 1980-10-17
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Granted: 1982-04-13
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Expires: 2000-10-17
Abstract
Abstract Novel acetylenic compounds useful as starting materials for the preparation of β-damascenone. Process for their preparation and use thereof.
Inventors
- 👤 Peter Fankhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:54
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/587; C07C49/603; C07C403/00; C07C403/06; C07C403/08; C07C403/10; C07C403/14; C07C403/16; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/178; C07C43/1781; C07C45/00; C07C45/61; C07C45/67; C07D; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
Compounds of formula ##STR10## wherein symbol R represents a hydrogen atom, a trialkylsilyl radical or a group of formula ##STR11## wherein, when taken separately, each of symbols R 1 and R 2 represents a lower alkyl radical or, when taken together, R 1 and R 2 represent a tetramethylene group.
Claim 2
Dependent Claim
50 words
Compounds of formula ##STR10## wherein symbol R represents a hydrogen atom, a trialkylsilyl radical or a group of formula ##STR11## wherein, when taken separately, each of symbols R 1 and R 2 represents a lower alkyl radical or, when taken together, R 1 and R 2 represent a tetramethylene group.
References Cited (Backward Citations)
US3946078A
Cited
US3928400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |